2981491 has 4 divisors (see below), whose sum is σ = 3050872. Its totient is φ = 2912112.

The previous prime is 2981483. The next prime is 2981501. The reversal of 2981491 is 1941892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2981491 - 2³ = 2981483 is a prime.

It is a Duffinian number.

2981491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2981401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34626 + ... + 34711.

It is an arithmetic number, because the mean of its divisors is an integer number (762718).

2^2981491 is an apocalyptic number.

2981491 is a deficient number, since it is larger than the sum of its proper divisors (69381).

2981491 is an equidigital number, since it uses as much as digits as its factorization.

2981491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69380.

The product of its digits is 5184, while the sum is 34.

The square root of 2981491 is about 1726.6994527132. The cubic root of 2981491 is about 143.9277383067.

The spelling of 2981491 in words is "two million, nine hundred eighty-one thousand, four hundred ninety-one".